Abstract:According to the different observing objects, the widely used photovoltaic maximum power point tracking (MPPT) techniques can be divided to two kinds, which are based on input parameters and output parameters respectively. To comprehensively investigate the performance of these two methods, this paper adopts the popular perturb & observe (P&O) method and develops the small-signal model of a boost MPPT converter using averaged switching method. The transfer functions from variations in the duty cycle to disturbances of the observe objects describes how system parameters influence the dynamic performance, also demonstrates the dynamic performance of each MPPT method. The investigation results are contributed to choose an appropriate MPPT control method, optimize the system parameters, perturb step of the duty cycle and P&O cycle. The theoretical analysis is verified experimentally.
杨水涛, 张帆, 丁新平, 钱照明. 基于输入-输出参数的光伏电池最大功率控制的比较[J]. 电工技术学报, 2009, 24(6): 95-102.
Yang Shuitao, Zhang Fan, Ding Xinping, Qian Zhaoming. Comprehensive Research on the Photovoltaic Maximum Power Point Tracking Based on Input Parameters or Output Parameters. Transactions of China Electrotechnical Society, 2009, 24(6): 95-102.
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